8 results about "Dynamometer" patented technology

The invention relates to a downhole working condition diagnosis method for a sucker rod pumping well based on valve working points. The method comprises: acquiring K+1 sucker rod pumping unit ground dynamometer cards, the first K dynamometer cards being corresponding to N kinds of working conditions, and the last one being a dynamometer card of a to-be-diagnosed working condition; performing normalization processing on the dynamometer card; using a gravity center division method to divide the normalized dynamometer cards into an upper left region, an upper right region, a lower right region, and a lower left region; extracting four working points of valve and seven geometric characteristics of the ground dynamometer cards; using the seven geometric characteristics of the sucker rod pumping well ground dynamometer cards as input, establishing a continuous hidden Markov working condition diagnosis model, describing mapping relations of working points and dynamometer card characteristics and downhole working conditions of the sucker rod pumping well, to realize working condition diagnosis. The method can comprehensively and accurately show characteristics of various downhole working conditions, and a working condition real-time diagnosis model is established by using the characteristics, so that production safety and high efficiency of sucker rod pumping well are improved.

An electric vehicle three-system integrated test platform belongs to the field of electric vehicles. The electric vehicle three-system integrated test platform is composed of a battery and battery management system, a motor and motor control system, and an industrial personal computer. The battery and battery management system comprises a battery cooling/heating system, a battery management system, and a battery pack. The motor and motor control system comprises a current sensor, a voltage sensor, a motor, a speed/torque sensor, an inertia disc, a dynamometer, a motor controller, and a tension controller. The battery cooling/heating system makes the batteries work within an optimal temperature range. Through the battery management system, the voltage and current of the battery can be monitored, and functions like battery equalization can be achieved. Through the motor and motor control system, the performance and properties of the motor under various conditions can be tested and analyzed. A finished vehicle control system simulates different driving conditions of an electric vehicle so as to test and optimize the regenerative braking control effect.

The invention discloses an aluminum shell bearing seat thermal-mechanical coupling strain measurement system and a measurement method. The aluminum shell bearing seat thermal-mechanical coupling strain measurement system comprises a base, a dynamometer, a left transmission shaft, a high low temperature control box, a transition flange, a left support seat, a to-be-measured sample assembly, a sample middle support seat, a right transmission shaft and a static test component or a dynamic test component; the right transmission shaft is in transmission connection with the static test component orthe dynamic test component. According to the system and method disclosed by the invention, the force sensor value is converted into the required loading torque value by a loading mechanism; by combining a strain gauge, a strain rosette, a compensation strain gauge and a thermocouple, accuracy of the whole test process is guaranteed more accurately; meanwhile, through the high low temperature control box, the actual working temperature state of the to-be-measured sample can be simulated, the change law and change condition in the actual working state of the sample can be tested more accurately,and data support can be provided for transmission design.

The invention relates to the fields of indoor tests in geotechnical engineering and geological engineering, relates to a tester for the lateral expansibility of a soft rock, and especially relates toa tester and a test method for the lateral expansibility and the expansion deformation of the expansive soft rock in the engineering field. The main body structure of the tester includes a loading cap, a pressure bearing plate, dynamometers, pulleys, a sample loading chamber, a water permeable plate, a sliding protection tank, a proving ring, a dial gage, a pressure display instrument, a filter paper, a bearing bottom plate and a stationary block. The test method makes the lateral expansion deformation and the lateral expansibility of the expansive soft rock under the action of vertical load have a high consilience with onsite data of the engineering, is an accurate test method for knowing the mechanical performances of the expansive soft rock in the engineering, and provides a basis for the lateral deformation of the soft rock.

The invention aims to provide a multifunctional compound supercharging test system. The multifunctional compound supercharging test system comprises an air compressor, turbines, a combustion chamber, a motor and a dynamometer, wherein the air compressor comprises a first air compressor and a turbocharger air compressor; the turbines comprise a first turbine working together with the first air compressor and a turbocharger turbine working together with the turbocharger air compressor. Through reasonable valve control and testboard control, independent pneumatic performance test can be carried out on key components, a centrifugal compressor and the turbine, of a turbocharger, and matching test research can be conducted on a single-stage turbocharger and compound supercharging systems such as a two-stage turbo-charging system. The multifunctional compound supercharging test system can also achieve pneumatic characteristic tests of both a high-pressure supercharger centrifugal compressor and a high-pressure supercharger turbine for two-stage supercharging.

The invention relates to a system of power test, and the objective is to provide an air-fuel mixed power test system. In the test system, an eddy current dynamometer is connected with a pneumatic engine, a hydraulic dynamometer is connected with an internal combustion engine; and the test system also includes a gas tank for storing high pressure gas, the gas tank is connected with a heat exchanger, a stable pressure box and a pneumatic engine in order via pipelines; high-temperature discharging pipelines of the internal combustion engine is connected with the heat exchanger, exchanging heat with high pressure gas by the heat exchanger and communicationg with the atmosphere; a pressure sensor is provided on the stable pressure box, pipelines of the gas tank outlet is provided with an air flow meter, high pressure gas pipelines of both sides of the heat exchanger is provided with a thermocouple respectively; and all the pressure sensor, the air flow meter and the thermocouple are connected with a computer. The invention provides feasible test system for verifying validity of the air-fuel mixed power test system theoretical derivation, being able to provide reliable experimental parameters for implementation of more advanced air-fuel mixed power system in the future.

The invention relates to a hydraulic transmission external gear clamping device with a clamping force measurable mechanism and belongs to the technical field of external gear clamps. The hydraulic transmission external gear clamping device comprises a lever installing base, a clamping head and a clamping arm. The clamping arm is composed of an upper clamping arm body and a lower clamping arm body. The clamping head is composed of an upper clamping head body and a lower clamping head body. The upper clamping arm body and the lower clamping arm body are hinged to the upper portion and the lower portion of the lever installing base correspondingly. The upper clamping head body is fixed to the right end of the upper clamping arm body. The lower clamping head body is fixed to the right end of the lower clamping arm body. A taper sleeve which is small in the left end and large in the right end and used for folding the left end of the upper clamping arm body and the left end of the lower clamping arm body is horizontally arranged on the left side of the upper clamping arm body and the left side of the lower clamping arm body. A dynamometer is installed in the position, between the upper clamping arm body and the lower clamping arm body, of the right side of the lever installing base. The hydraulic transmission external gear clamping device with the clamping force measurable mechanism is improved based on an original technology, a mechanical power mechanism which is simple and easy to operate is additionally arranged, accordingly, the effects that operation and staff training are convenient are ensured, time and effort are saved at the same time, and the labor intensity of workers is greatly relieved.